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They're all different things and are independent.Charge describes how strongly a particle interacts via the electromagnetic force.Color charge describes how strongly a particle interacts via the strong force.Spin is another intrinsic property of particles that works similar to angular momentum, which is a property of rotating objects (hence it's called spin). However, the particles are not actually "spinning," it's just that the mathematics work out that way. You can come up with devices that use both spin and charge to do useful things. If you have a charged particle with spin, you generate a tiny magnet. I know this has been applied in magnetic storage devices and in MRI imaging.

Charge describes how strongly a particle interacts via the electromagnetic force.Color charge describes how strongly a particle interacts via the strong force.

i just read that color force is what holds the quarks together to form a proton/neutron and that the strong force is considered a residual of that force. As a residual of color force, strong force is what holds protons and neutrons together. is that correct?also, the electromagnetic force operates to hold atoms together correct. So where the strong force holds neutrons and protons together, the electromagnetic force holds atomic nuclei and electrons together?and where is the weak force in all this.

Quote from: MichaelS on 02/10/2009 00:17:15i just read that color force is what holds the quarks together to form a proton/neutron and that the strong force is considered a residual of that force. As a residual of color force, strong force is what holds protons and neutrons together. is that correct?also, the electromagnetic force operates to hold atoms together correct. So where the strong force holds neutrons and protons together, the electromagnetic force holds atomic nuclei and electrons together?and where is the weak force in all this.That's all correct to the best of my knowledge, though I'm not an expert in this area of physics.

ok wait. this website says quarks have both color and chargeQuarks have color -> ...sorry, you cannot view external links. To see them, please REGISTER or LOGINquarks carry fractional charges. is the addition of these charges what determines the charge on the resulting hadron? m

ok so one last question. quantum numbers are used a a short hand to describe the "state" of a particle correct. Am I getting this wrong or are quantum numbers just a fancy pants name for integers? Particle states are "discrete" (and not continuous) and so therefore we use "integers" (i.e. quantum numbers) to describe.